With two open sides, Flex Double Sided fireplace insert creates the perfect room divider. The see-through design provides unobstructed views of the flickering flame from the front and the back, infusing warmth and ambiance into two adjacent rooms.
The clean lines and ‘all flame’ configuration of the Flex 50DB means the entire viewing area is dedicated to the eye-catching flame, creating a harmonious blend of traditional style and contemporary design.
Providing endless design flexibility and installation freedom to interior designers, architects, builders, landscapers and homeowners, EcoSmart’s Flex Fireplace Series ensures your next commercial project or residential renovation includes a captivating fire feature.
The iconic zero clearance models – Bay, Single Sided, Left Corner, Right Corner, Peninsula, Double Sided, Island, Bench styles– are ventless, free of smoke and soot, and fueled by e-NRG Bioethanol, a renewable energy source.
One of the most popular of the XL Series burners, the XL900 burner delivers a stunning linear flame. Efficiency is a key feature of this burner, delivering up to 13 hours of heat generating flame from a single refill.
Manufacturer approved surround for the UL Listed XL900 burner.
Double Sided Ethanol Fireplace Inserts are available in other sizes and configuration i.e. 18DB, 32DB, 42DB, 50DB with Decorative Box, 60DB with Decorative Box, 68DB, 68DB with Decorative Box, 78DB with Decorative Box, 86DB, 86DB with Decorative Box, 104DB, 104DB with Decorative Box, 122DB, 122DB with Decorative Box, 140DB with Decorative Box, 158DB, 158DB with Decorative Box
FUEL EFFICIENCY:
Volume Capacity
2.4 Gal [9 L]

Heats on Average
646ft2 [60m2]

Minimal Room
3885ft3 [110m3]

Thermal Output
16 MJ/h – 15000 BTU/h – 4.4 kW

Burn Time
8 – 13h
*Please Note: “These values are indicative only and may vary depending on the model purchased, installation environment, and the composition of the e-NRG bioethanol sourced in each country.“
What’s Included: Fireplace Insert, Glass Windscreen, Black Glass Charcoal, Bioethanol Burner, 1.25 Gallon Jerry Can, Bottle Adapter, Lighting Rod, Refillable Butane Fire Lighter and XL Baffles
*Note: “e-NRG Bioethanol Fuel for the burner is sold separately. Glass windscreen included. Black Fireboxes come with Stainless Steel Burners. Model comes with Black Glass Charcoal.”
Click to see Included Accessories
LIGHTINING ROD
This operational accessory enables you to safely adjust the slider position of the Burner at any time. It is also used for the ignition and extinguishing procedures.

JERRY CAN 1.25 GAL
Safety features include automatic stop flow, fast flow rate, locking thumb button control, and self-venting system.

BOTTLE ADAPTOR
The adaptor connects the safety spout from the Jerry Can straight onto the e-NRG bottle making fuelling the fire quicker and easier.

FIRE LIGHTER
This refillable butane lighter supports the safe ignition of the lighting rod. The length of the lighter further enhances the management of the lighting process.

XL BAFFLES
XL Baffles are used to regulate and further stabilise the flame increasing fuel efficiency of the burner.

BLACK GLASS CHARCOAL
The Black Glass Charcoal is made from high-quality tempered glass and has been designed to withstand harsh weather and temperatures of up to 1300ºF/700ºC.
KEY FEATURES:
Application
Indoor or outdoor single room application. With one open side, view the flame from the front.
Colors
Available in black, firebox comes with stainless steel burners and decorative Black Glass Charcoal.
No Gas or Electricity
No gas, no electricity, no chimney, no venting or external vent cap. 4 fewer General Contractors.
Clean Burning
All the fuel is housed within Flex’s self-contained burner so you don’t have to run a gas line or electric wires through your walls. And because e-NRG Bioethanol is clean burning, you don’t need a flue or a chimney
Zero Clearance
Self-contained, zero clearance construction allows your Flex fireplace to be framed into wood or metal studs, providing installation freedom and flexibility for builders.
Quick and Easy Assembly
Requiring virtually no assembly, Flex Fireboxes are designed to be placed into the desired location, safely secured into position, and operated immediately.
Rust Proof
Zinc sealed steel construction powder coated with super hi-temp black paint prevents rusting so all fireplaces can be used both indoors or outdoors.
Luxurious Finish
Available in a timeless black finish, Flex Fireboxes come with stainless steel burners and black glass charcoal.
Wind Screen
Included integrated windscreen sits flush behind frame.
Tested World Wide
EcoSmart collection has been thoroughly tested against a number of global standards and are UL Listed in the USA, Certified for EU and UK in accordance with EN16647, and satisfy the ACCC Safety Mandate for Australia.
STANDARD FEATURES:
-
Built-in See-Through Ethanol Firebox for Indoor or Outdoor Multi-room Installation
- Easy or no Maintenance Required.
- Made of Mild Steel and Toughened Glass
- No Gas, Electricity, Chimney, or Venting Required
- Adjustable Flame – allows you to control the flame intensity and heat output.
- Safe Filling – safer than most other ethanol fireplaces.
- 2 Glass Windscreen Included – for safety and wind protection.
- ISO Certified
-
UL Listed
SPECIFICATIONS:
Dimensions
57.9″ W x 13.9″ D x 31.8″ H
Weight
156lb [70.80kg]
Warranty
- Stainless steel parts including raw, linished and powder coated: 2 Years from Date of Purchase
- Mild steel including powder coated and chrome plated, Cement, Glass, Leather, Fabric and MDF (Painted OR Cement Rendered): 1 Year from Date of Purchase
TECHNICAL DRAWINGS:
Front View

Side View

Top View

CA Residents: See Prop 65 WARNING.
DOWNLOADS:
- Download Installation and Operation Manual
- Download Specs Sheet
- Download Summary Brochure
- Download Technical Specification
- Download Look Book
*Note: “Read the manual carefully before operating the burner. Physical model dimensions should be verified against cut out dimensions BEFORE installation begins to confirm tolerances align.“
OPTIONS & ACCESSORIES:
Click to see e-NRG Bioethanol

e-NRG is the highest quality bioethanol fuel available
Formulated for use in ventless bioethanol fireplaces, e-NRG is the cleanest, most efficient liquid ethanol fuel on the market and produces the best flame each and every time.
VIDEOS:
With two open sides, Flex Double Sided fireplace insert creates the perfect room divider. The see-through design provides unobstructed views of the flickering flame from the front and the back, infusing warmth and ambiance into two adjacent rooms.
The clean lines and ‘all flame’ configuration of the Flex 50DB means the entire viewing area is dedicated to the eye-catching flame, creating a harmonious blend of traditional style and contemporary design.
Providing endless design flexibility and installation freedom to interior designers, architects, builders, landscapers and homeowners, EcoSmart’s Flex Fireplace Series ensures your next commercial project or residential renovation includes a captivating fire feature.
The iconic zero clearance models – Bay, Single Sided, Left Corner, Right Corner, Peninsula, Double Sided, Island, Bench styles– are ventless, free of smoke and soot, and fueled by e-NRG Bioethanol, a renewable energy source.
One of the most popular of the XL Series burners, the XL900 burner delivers a stunning linear flame. Efficiency is a key feature of this burner, delivering up to 13 hours of heat generating flame from a single refill.
Manufacturer approved surround for the UL Listed XL900 burner.
Double Sided Ethanol Fireplace Inserts are available in other sizes and configuration i.e. 18DB, 32DB, 42DB, 50DB with Decorative Box, 60DB with Decorative Box, 68DB, 68DB with Decorative Box, 78DB with Decorative Box, 86DB, 86DB with Decorative Box, 104DB, 104DB with Decorative Box, 122DB, 122DB with Decorative Box, 140DB with Decorative Box, 158DB, 158DB with Decorative Box
FUEL EFFICIENCY:
|
2.4 Gal [9 L] |
Heats on Average |
646ft2 [60m2] |
Minimal Room |
3885ft3 [110m3] |
Thermal Output |
16 MJ/h – 15000 BTU/h – 4.4 kW |
Burn Time |
8 – 13h |
*Please Note: “These values are indicative only and may vary depending on the model purchased, installation environment, and the composition of the e-NRG bioethanol sourced in each country.“
What’s Included: Fireplace Insert, Glass Windscreen, Black Glass Charcoal, Bioethanol Burner, 1.25 Gallon Jerry Can, Bottle Adapter, Lighting Rod, Refillable Butane Fire Lighter and XL Baffles
*Note: “e-NRG Bioethanol Fuel for the burner is sold separately. Glass windscreen included. Black Fireboxes come with Stainless Steel Burners. Model comes with Black Glass Charcoal.”
Click to see Included Accessories
|
LIGHTINING ROD This operational accessory enables you to safely adjust the slider position of the Burner at any time. It is also used for the ignition and extinguishing procedures. |
JERRY CAN 1.25 GAL Safety features include automatic stop flow, fast flow rate, locking thumb button control, and self-venting system. |
|
BOTTLE ADAPTOR The adaptor connects the safety spout from the Jerry Can straight onto the e-NRG bottle making fuelling the fire quicker and easier. |
|
FIRE LIGHTER This refillable butane lighter supports the safe ignition of the lighting rod. The length of the lighter further enhances the management of the lighting process. |
|
XL BAFFLES XL Baffles are used to regulate and further stabilise the flame increasing fuel efficiency of the burner. |
|
BLACK GLASS CHARCOAL The Black Glass Charcoal is made from high-quality tempered glass and has been designed to withstand harsh weather and temperatures of up to 1300ºF/700ºC. |
KEY FEATURES:
Application
Indoor or outdoor single room application. With one open side, view the flame from the front.
Colors
Available in black, firebox comes with stainless steel burners and decorative Black Glass Charcoal.
No Gas or Electricity
No gas, no electricity, no chimney, no venting or external vent cap. 4 fewer General Contractors.
Clean Burning
All the fuel is housed within Flex’s self-contained burner so you don’t have to run a gas line or electric wires through your walls. And because e-NRG Bioethanol is clean burning, you don’t need a flue or a chimney
Zero Clearance
Self-contained, zero clearance construction allows your Flex fireplace to be framed into wood or metal studs, providing installation freedom and flexibility for builders.
Quick and Easy Assembly
Requiring virtually no assembly, Flex Fireboxes are designed to be placed into the desired location, safely secured into position, and operated immediately.
Rust Proof
Zinc sealed steel construction powder coated with super hi-temp black paint prevents rusting so all fireplaces can be used both indoors or outdoors.
Luxurious Finish
Available in a timeless black finish, Flex Fireboxes come with stainless steel burners and black glass charcoal.
Wind Screen
Included integrated windscreen sits flush behind frame.
Tested World Wide
EcoSmart collection has been thoroughly tested against a number of global standards and are UL Listed in the USA, Certified for EU and UK in accordance with EN16647, and satisfy the ACCC Safety Mandate for Australia.
STANDARD FEATURES:
- Built-in See-Through Ethanol Firebox for Indoor or Outdoor Multi-room Installation
- Easy or no Maintenance Required.
- Made of Mild Steel and Toughened Glass
- No Gas, Electricity, Chimney, or Venting Required
- Adjustable Flame – allows you to control the flame intensity and heat output.
- Safe Filling – safer than most other ethanol fireplaces.
- 2 Glass Windscreen Included – for safety and wind protection.
- ISO Certified
-
UL Listed
SPECIFICATIONS:
Dimensions |
57.9″ W x 13.9″ D x 31.8″ H |
---|---|
Weight |
156lb [70.80kg] |
Warranty |
|
TECHNICAL DRAWINGS:
Front View |
|
---|---|
Side View |
|
Top View |
CA Residents: See Prop 65 WARNING.
DOWNLOADS:
- Download Installation and Operation Manual
- Download Specs Sheet
- Download Summary Brochure
- Download Technical Specification
- Download Look Book
*Note: “Read the manual carefully before operating the burner. Physical model dimensions should be verified against cut out dimensions BEFORE installation begins to confirm tolerances align.“
Click to see e-NRG Bioethanol
e-NRG is the highest quality bioethanol fuel available Formulated for use in ventless bioethanol fireplaces, e-NRG is the cleanest, most efficient liquid ethanol fuel on the market and produces the best flame each and every time. |